• The APS Catalog has been deprecated and removed from all Plesk Obsidian versions.
    Applications already installed from the APS Catalog will continue working. However, Plesk will no longer provide support for APS applications.
  • Please be aware: with the Plesk Obsidian 18.0.78 release, the support for the ngx_pagespeed.so module will be deprecated and removed from the sw-nginx package.

Issue Migrating Sites Error

scottthepotter

Basic Pleskian
I have migrated about 40 sites in the past week and today when I go to the 'Migration and Transfer Manager' I get the following error:

Failed to check Plesk API connection to target Plesk server: HttpClientError(HTTP Error 502: Bad Gateway, '<html>\r\n<head><title>502 Bad Gateway</title></head>\r\n<body bgcolor="white">\r\n<center><h1>502 Bad Gateway</h1></center>\r\n<hr><center>nginx</center>\r\n</body>\r\n</html>\r\n')

When I check the logs (/var/log/sw-cp-server/error.log) I see the following:
2017/03/01 10:19:21 [error] 30609#0: *66 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 74.208.43.105, server: , request: "POST /enterprise/control/agent.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/sw-engine.sock:", host: "localhost"

I have changed the /etc/sw-cp-server/config file to have:
fastcgi_buffers 32 32k;
fastcgi_buffer_size 64k;

I have restarted httpd, nginx, sw-cp-server, sw-cp-engine to no avail

Incidentally when I try to navigate to 'Extensions>Webserver Configurations Troubleshooter' I get a '502 Bad Gateway' error from NGINX.
 
There may be many reasons of this 502 nginx error described in KB articles. I would suggest you use phrase:

failed (104: Connection reset by peer) while reading response header from upstream

for KB search and find there appropriate solution.
 
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